The AMS Advanced Mini Red Dot Sight delivers precision targeting in an ultra-compact design featuring a 4 MOA red dot reticle and Shield/RMSC footprint compatibility for versatile mounting options.AMS Advanced Mini Red Dot Reflex Sight4 MOA dot reticle for precise target acquisitionShield/RMSC optic footprint compatibilityUltra-lightweight at only 0.38 ouncesCompact 1.80-inch length profileCR2032 battery power sourceBlack matte finishMount not included - compatible with Shield/RMSC mountsIdeal for concealed carry pistols backup sights or any application requiring a lightweight low-profile red dot optic with proven Shield footprint compatibility.